This project is simpler than the "Quattuor" project. It doesn't use the LM1036 chip as audio control: it uses a simple volume control instead. As "Quattuor", it uses a pair of Visaton FR 10 4 OHM drivers. Unfortunately, those drivers are not magnetically shielded, so cautions must be taken when using them near a CRT monitor, TV or any other device containing a CRT.

The amplifier is able to deliver about 4W each channel, and has a gain per channel of 22.39dB (13.17V/V). The predicted frequency response is 60-20000Hz (-10dB).

Important: When printing the PCB and the panel prints, print them in real size. This is a requirement, even if you print in A4. Some printers will reduce to fit. This procedure should work for both A4 and Ansi A (8.5" x 11") formats. The PCB should measure 120mm x 83mm.

In the attached file you can see the front and back views for both the left and right speakers. Just like the boxes for the Quattuor, the edges on the front face are meant to be beveled with a 10mm radius round bevel.